There was a very interesting program on Russian Television about Pytr Stolyarovsky:
http://en.wikipedia.org/wiki/Pyotr_StolyarskyHe trained so many talented violinists and his influence is felt even today. He wanted to be a virtuoso, and even played for A Rubinstein when he visited Odessa (his mother lived there). Later the Soviet government appreciated his teaching and they built music school for him (it was named after him). In gratitude he said - "Thank you to comrade Koganovich and the rest of big wigs" (Stalin being present). But Stalin decided to overlook that and clapped. Koganovich was a member of the Politburo.
He died of a heart attack after being told that his beloved school was destroyed during the WW2.
This is my tribute to him and to Oistrach, Kogan and many others (I think Heifitz studied with him too before going to the conservatory).